I doubt a
Samuel connection because of the letter "n". In Yiddish,
Samuel is given as Schmuel or Schmul.
The initial Sch suggest a
German (not Germanic! the other Germanic languages use different spellings for that sound) origin, but it is not a
German given name at all.
It could be a surname, from Schönlay; schön means "beautiful" and Lay "rock, cliff, crag (of slate)" is the determiner also occurring in Loreley.
This message was edited 9/29/2015, 3:00 AM